176 



A MANUAL OF DANGEEOUS INSECTS. 



Xylina omlthopus Rott. 



(Gray Plum Owlet Moth. Noctuidse; Lepidoptera.) 



Host: Plum. 



Injury: Defoliation. 



Description and biology: Adult, forewing 15-17 mm. long; grayish white mixed 

 with weak brownish. Occurs August and September (Germany). Pupates in July 

 in earth. Larva 33 mm. long; blue-green in color, marked with white spots; three 

 white dorsal lines; head whitish green. Overwinters as egg. 



Distribution: Europe. 



Henschel, G. a. O. Die Schadlichen Forst- und Obstbaum-Insekten, 1895, p. 361. 



Xylina socia Rott. 

 (Brown Plum Owlet Moth. Noctuidae; Lepidoptera.) 



Hosts: Plum, elm, linden. 

 Injury: Defoliation. 



Description and biology: Adult, forewing 17-20 mm. long; brown with a mixture of 

 gi-ay or rose color. Occurs August and September (Germany). Pupates in earth. 

 Larva length 33 mm.; color apple-green; marked with 

 white spots and a broad white dorsal stripe; head shining 

 green. Over^vinters as egg. 



Distribution: Europe. 

 Henschel, G. A. O. Die Schadlichen Forst- und 

 Obstbaum-Insekten, 1895, p. 361. 



Laspeyresla f uuebrana Treitschke. 

 (Red Plum Maggot. Tortricidae; Lepidoptera.) 



Host: Plum. 



Injury: Attacks friut; damage not easy to detect. 

 "Caterpillar plentiful in plum pies." (Stainton.) 



Description and biology: Adult, wing expanse about 12 

 mm.; forewings purplish gray, clouded with smoky gray; 

 at anal angle is an indistinct, ocellated patch, edged with 

 pale gray and inclosing four black dots. Pupates in 

 whitish cocoon under rough bark or debris in spring. Pupa 

 amber color. Larva, length 15 mm., chestnut red in color, 

 with sides yellowish or entirely deep red . Eggs, placed at 

 base of fruit stalk, hatching in 10 days. (See text fig. 83.) 

 Europe, Asia Minor. 



Fig. 83.— Red plum maggot (Las- 

 Tpeyresia funcbrarmy. Moth and 

 larva in fruit. (Henschel.) 



Distribution: 



Theobald, F. V. Insect Pests of Fruit, 1909, p. 363. 



Laspeyresia woeberiana Schlffermiller. 

 (Bark Tortrix. Tortricidse; Lepidoptera.) 



Host: Prunus sp. and other fruits. 



Injury: Injury to bark. 



Description and biology: Adult, wing expanse 16 mm., forewing dark brown, with 

 rusty-yellow and lead-gray oblique lines; five white notches on fore margin, and a 

 twisted lead Line from the notches to the eye spot; speculum on a rusty-yellow groimd, 

 marked with black. Two broods, first May and June; second August and September 

 (Germany). Pupa chestnut brown, pupates in larval gallery. Larva length 9 mm.; 

 dirty green, red-headed, sparsely haiiy. Feeds in galleries in bark; betrayed by 

 masses of frass hanging out of air holes. Eggs placed in crevices in bark. 



Distribution: Europe. 



Sorauer, p. Handbuch der Pflanzenkrankheiten, 3d ed., 1913, vol. 3, p. 283. 



